Book-leaf.



m. W 3. Pmmd Nov. 6, 1900. H. c. MILLER.

300K LEAF.

(Application filed Jun. 1a, 1699. (No Model.)

"m: mums PETERS co. wonxumov. WASHINGTON. 0.1:v

, rim; STATES HENRY O. MILLER, OF MILWAUKEE, WISCONSIN.

BOOK LEAF.

SEEGIFIOATION forming part of Letters Patent N 0. 661,223, datedNovember 6, 1900.

Application filed January 13, 1899, Serial NO- 702,047. (No model.)

To all whom it may concern.-

Be it known that I, HENRY C. MILLER, of Milwaukee, in the county ofMilwaukee and State of Wisconsin, have invented a new and usefulImprovement in Leaves for Books or Book-Binders, of which the followingis a description, reference being had to the accompanying drawings,which are a part of this specification.

My invention has relation to improvements in leaves for books orbook-binders.

The invention relates more particularly to that class of leaves whichare used in connection with temporary binders, said leaves being placedand detachably secured between the side pieces forming the cover of thebinder.

Leaves of the character referred to are usually provided with a hinge tofacilitate turning, said hinge being formed of linen, muslin, or otherflexible material secured at its inner edge to the rear edge of the leafand at its outer edge to a reinforcing-strip composed of a material of aless flexible nature, said reinforcing-strip being provided withopenings which are adapted to receive the mechanism of the binder, tothereby permit the leaves to be inserted or removed. It has been foundin practice that hinge-joints thus formed are objectionable owing totheir tendency to buckle, curl, or crumple, particularly when opening aleaf.

It is therefore the object of my improvement to provide, in connectionwith a hingejoint of the class described, a means to prevent buckling,curling, or crumpling of the material of which the hinge is composed;and to this end the invention consists of the construction andarrangement of the parts or their equivalents, as hereinafter more fullyset forth.

In the accompanying drawings, Figure 1 is a horizontal section of abinder, between the sides of which my improved form of leaves areinserted; and Fig. 2 is a perspective view of one of the improvedleaves.

I have shown my improved form of leaf in connection with a temporarybinder similar to that covered in United States Letters Pattent issuedto myself and Julius Bauer for improvements in temporary binders, No.587,986,dated August 10, 1897. It will be understood, however, that theleaves are not necessarily restricted to use in connection with thisparticular form of binder, but may be adapted for use in connection withalmost any form of binder or book.

Referring to the drawings, the numeral 9 indicates one side piece of thecover, which side piece is provided at its rear edge with a back piece10. It will be understood that there is another side piece (not shown)similar to the side piece 9, and these two side pieces, together withthe back piece 10, constitute the complete cover. One of the side piecesis shown as provided with projecting revoluble tubular posts 11, andprojecting revoluble bars 12 extend from the other side piece and areadapted to telescope into the posts 11.

The numeral 13 indicates the detachable leaf. To the rear edge of thisleaf is connected, preferably by a suitable paste or glue, a flexiblestrip 14, composed of muslin, linen, or other desirable flexiblematerial. Across the rear portion of this flexible strip 14 is pasted,glued, or otherwise suitably secured a reinforcing-strip 15, said stripthereby providing a stiffer or less flexible portion, in which openings16 for the posts are formed. WVhere two-part posts of the characterherein described are employed, the openings 16 are provided withstraight slots 17, extending through the rear edge of thereinforcing-strip, so as to provide for the leaves being readilywithdrawn out of engagement with the posts when it is desired to removethe leaves or pushed inwardly into engagement with said posts when it isdesired to secure a leaf in the cover. 'lhese openings 16 are sop0sitioned on the reinforcing-strip as when the leaves are inserted inplace between the side pieces of the cover to register with theupwardly-extending posts.

The portion of the flexible strip 14 between the inner edge of thereinforcing-strip 15 and the outer edge of the leaf proper is, owing tothe material of which said strip is formed, of a flexible character, andhence a hinge-joint is thereby formed to permit a leaf to be readilyturned out onto an opened side piece of the cover of the binder or book.As stated at the outset of the'speciflcation, however, these flexiblehinge-joints in practice have been found open to objection owing totheir tendency to buckle, curl, or crumple. My present inventiontherefore consists in the provision of means for obviating thisdisadvantage by providing, longitudinally of the flexible hinge-joint astiliening device. This stiffening device consists of a reinforcementextending longitudinally of the flexible hingepiece, saidstiffening-piece being of less width than the flexible hinge-piece andso arranged with relation thereto as to leave portions of the flexiblehinge-piece exposed on opposite side edges of the stiffening-piece. Itwill be obvious that by this construction the-hingejoint is stillpreserved, While at the same time the stiffening-piece effectuallyprevents the objectionable buckling or curling of the hingepiecereferred to.

The stiffening device is formed as an integral part of the hinge-strip14. To provide These folds of course extend longitudinally of the strip,and When secured together and to the main body of the hinge-strip forman effective stiffening device, which will accomplish the objects soughtto be secured by my invention.

What I claim as my invention is A loose leaf fora book or binderconsisting of a main flexible portion, a rear supplemental flexibleportion and a hinge portion comprising a flexible strip forming aconnection between the rear edge of the main portion and the inner edgeof the supplemental portion, said hinge portion being provided with astiffening device of less width than and extending longitudinally of theflexible strip of the hinge portion, and consisting of one or morelongitudinal folds in the flexible strip forming the hinge portion, saidfold or folds being secured to the main body of the hinge portion.

In testimony whereof I aflix my signature in presence of two Witnesses.

HENRY O. MILLER.

'Witnesses:

A. L. lVIORSELL, ANNA V. FAUST.

